Droidekas. They are far more faster than ANY units in the game but they have disadvantages(or you can call them "bugs" or "glitches"). There are several maps with "stairs" like Kamino, Bespin: Platforms and the annoying thing is that Droidekas stuck somewhere. Once I could easily capture a CP before enemy units arrive but the Droideka stopped and started to "jump" at the stairs. I had to deploy from ball mode, the droideka slowed down and got killed. Did these things ever happened to you?